Custom Software Vs. Packaged Software
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Schnell Solutions. Bespoke software delivered. Our main services overview include: Besopke Software, Mobile Apps, Ebase XI Services, Business Process Audits.
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http://www.slideshare.net/shimadah/allwinneros
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Video: http://joyent.com/blog/linux-performance-analysis-and-tools-brendan-gregg-s-talk-at-scale-11x ; This talk for SCaLE11x covers system performance analysis methodologies and the Linux tools to support them, so that you can get the most out of your systems and solve performance issues quickly. This includes a wide variety of tools, including basics like top(1), advanced tools like perf, and new tools like the DTrace for Linux prototypes.
[cb22] Mal-gopherとは？Go系マルウェアの分類のためのgimpfuzzy実装と評価 by 澤部 祐太, 甘粕 伸幸, 野村 和也
Goで書かれたマルウェアは年々増加している。Goはクロスプラットフォームの性質を持っており、複数のプラットフォームを標的にしたい攻撃者にとって好都合な言語である。その一方で、ライブラリが静的にリンクされていることからユーザ関数とライブラリの区別が難しく、アナリストにとって解析が困難である。そうした状況で、Goマルウェアの分類や探索の需要が高まっている。
本講演ではgimpfuzzyという新たな提案手法を用いてGoマルウェアに対し類似性の計算や分類が可能であることを検証する。われわれは既存手法であるgimphashにFuzzy Hashingを組み込んだ「gimpfuzzy」を新たに実装した。講演では提案手法を利用した分類の判別率を検証し、分類された結果の中からいくつかの事例を取り上げその妥当性について確認する。また、Goマルウェアの分類における課題についても検討を行う予定である。
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The document discusses fuzz testing or fuzzing, which is a software testing technique that involves providing invalid, unexpected, or random data as inputs to a computer program to test for security vulnerabilities or crashes. It provides examples of fuzzing network protocols like HTTP and fuzzing file formats. It also discusses different types of fuzzers and provides an example of vulnerable source code and a simple fuzzing scheme to test it.
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This presentation is an introduction to Free and Open Source Software Licensing and Business Models. An open-source license is a type of license for computer software and other products that allows the source code, blueprint or design to be used, modified and/or shared under defined terms and conditions. This allows end users to review and modify the source code, blueprint or design for their own customization, curiosity or troubleshooting needs.
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FileInsight-plugins は McAfee FileInsight バイナリエディタ用のプラグイン集です。
文書ファイル型のマルウェアからマルウェアの実行ファイルやおとり文書ファイルを抽出するするなど、マルウェア解析に関する様々なデコード作業に便利です。FileInsight-plugins によって追加される主な機能は以下のとおりです。
- XOR やビットローテートされた文字列、バイト列の検索
- XOR キーをインクリメント / デクリメントする XOR (いわゆる rolling XOR)
- カスタム BASE64 テーブルを使用したエンコード / デコード
- AES 等8つの暗号アルゴリズムでの暗号化と復号
- Gzip 等7つの圧縮アルゴリズムでの圧縮、展開
- ファイル内に埋め込まれた PE ファイルの抽出
- ASCII, UTF-16 文字列の抽出 (strings) と抽出した16進文字列の自動デコード
- YARA によるスキャンと YARA ルールにマッチした領域の色付け
- CyberChef、IDA、VSCode 等の他のツールでデータを開く
FileInsight-plugins は私がプライベートで開発しているツールであり、私がこれまでに所属した組織で職務上開発したものではありません。
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This document provides an overview of six levels of abstraction in computing from hardware to interpreted languages. It then focuses on machine code and disassembly, explaining that disassembly converts binary malware into human-readable assembly language. Basic x86 architecture concepts are introduced, including CPU components, memory layout, instructions, registers, and basic operations like arithmetic, branching, and function calls.
Linux Kernel Exploitation
This document summarizes a presentation on Linux kernel exploitation given by Jon Oberheide. The presentation covered why the Linux kernel is an attractive target, a history of vulnerabilities in the kernel, classes of vulnerabilities, and ways to improve kernel security. Specific vulnerability examples discussed included privilege escalation using ReiserFS extended attributes and a NULL pointer dereference in OpenBSD that was leveraged for a multi-stage kernel exploit. The presentation encouraged both researchers to investigate kernel vulnerabilities and administrators to deploy additional hardening techniques.
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阪田 浩一 (@jyukutyo): ポノス株式会社 / 関西Javaエンジニアの会 / Javaチャンピオン
オラクル社からGraalVMというものが発表され、話題を呼んでいます。GraalVMは、HotSpot VM上に新しいJITコンパイラGraalと、言語実装用フレームワーク/ASTインタプリタであるTruffle、ネイティブイメージ作成機能とその実行に使われるSubstrateVMを併せ持ったものです。すでに、Truffleを使用したJavaScriptやRuby、R、Pythonの実装がGraalVMにあり、これらの言語とJavaは、コードから"相互に"呼び出しができます。独自の言語も、ASTにさえできれば、Truffleを使い、JVM上で実行できるよう実装できます。私も、簡単な四則演算の言語を、Truffleを使って実装したことがあります。Truffleは、Graal上で動作するものです。Graalには、こうして複数の言語を相互運用する際に、高いパフォーマンスを出せるよう、機能が実装されています。
このセッションでは、TruffleとGraalの概要と、言語を実行する際に、この2つがどのような働きをするか、を主に解説します。私もTruffleを使って、言語を実装してみようかな、と思っていただくことがゴールのセッションです。
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The document discusses various data structures and functions related to network packet processing in the Linux kernel socket layer. It describes the sk_buff structure that is used to pass packets between layers. It also explains the net_device structure that represents a network interface in the kernel. When a packet is received, the interrupt handler will raise a soft IRQ for processing. The packet will then traverse various protocol layers like IP and TCP to be eventually delivered to a socket and read by a userspace application.
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A walkthrough of the code structure used in the linux kernel to implement pipes and FIFOs.
This was presented to a Senior level class at the Indian Institute of Technology, Roorkee.
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These are the slides used in a lecture I gave in the XIV International Board on Free Software. In this lecture I gave a brief overview of the ELF specification (the ELF specification is a document describing the format of executable, shared libraries and relocatable objects files used in Linux and many others operating systems) and the Linux dynamic loader (which is a program that acts together with the OS to create and initialize a program address space among others tasks).
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The document discusses the history and advantages of Linux compared to other operating systems like Windows, DOS and UNIX. It explains how the GNU project was started to develop a free and open source UNIX-like operating system. It then describes how Linus Torvalds developed the initial Linux kernel in 1991 building on the work of the GNU project. It highlights some key advantages of Linux like high security, many available tools and the flexibility of the environment. It also provides a brief overview of some common Linux components like the kernel, shells, KDE/GNOME desktop environments and the directory structure.
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The document summarizes a presentation on reviewing the orientation and performance of regulators in South Africa's electricity sector. It discusses two dimensions of regulation: governance (independence, transparency) and substance (tariffs, standards). The presentation notes regulatory evaluations should examine both dimensions. It also outlines problems with economic regulation of state-owned enterprises and recommendations to address issues like unclear policy frameworks and lack of regulatory independence.More Related Content
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[cb22] Mal-gopherとは？Go系マルウェアの分類のためのgimpfuzzy実装と評価 by 澤部 祐太, 甘粕 伸幸, 野村 和也
Goで書かれたマルウェアは年々増加している。Goはクロスプラットフォームの性質を持っており、複数のプラットフォームを標的にしたい攻撃者にとって好都合な言語である。その一方で、ライブラリが静的にリンクされていることからユーザ関数とライブラリの区別が難しく、アナリストにとって解析が困難である。そうした状況で、Goマルウェアの分類や探索の需要が高まっている。
本講演ではgimpfuzzyという新たな提案手法を用いてGoマルウェアに対し類似性の計算や分類が可能であることを検証する。われわれは既存手法であるgimphashにFuzzy Hashingを組み込んだ「gimpfuzzy」を新たに実装した。講演では提案手法を利用した分類の判別率を検証し、分類された結果の中からいくつかの事例を取り上げその妥当性について確認する。また、Goマルウェアの分類における課題についても検討を行う予定である。
Fuzzing
The document discusses fuzz testing or fuzzing, which is a software testing technique that involves providing invalid, unexpected, or random data as inputs to a computer program to test for security vulnerabilities or crashes. It provides examples of fuzzing network protocols like HTTP and fuzzing file formats. It also discusses different types of fuzzers and provides an example of vulnerable source code and a simple fuzzing scheme to test it.
Open Source Licences
This presentation is an introduction to Free and Open Source Software Licensing and Business Models. An open-source license is a type of license for computer software and other products that allows the source code, blueprint or design to be used, modified and/or shared under defined terms and conditions. This allows end users to review and modify the source code, blueprint or design for their own customization, curiosity or troubleshooting needs.
NextGen Server/Client Architecture - gRPC + Unity + C#
Grani x KAYAC
http://engineering.grani.jp/
http://techblog.kayac.com/
[CB19] FileInsight-plugins: Decoding toolbox for malware analysis by 萬谷 暢崇
FileInsight-plugins は McAfee FileInsight バイナリエディタ用のプラグイン集です。
文書ファイル型のマルウェアからマルウェアの実行ファイルやおとり文書ファイルを抽出するするなど、マルウェア解析に関する様々なデコード作業に便利です。FileInsight-plugins によって追加される主な機能は以下のとおりです。
- XOR やビットローテートされた文字列、バイト列の検索
- XOR キーをインクリメント / デクリメントする XOR (いわゆる rolling XOR)
- カスタム BASE64 テーブルを使用したエンコード / デコード
- AES 等8つの暗号アルゴリズムでの暗号化と復号
- Gzip 等7つの圧縮アルゴリズムでの圧縮、展開
- ファイル内に埋め込まれた PE ファイルの抽出
- ASCII, UTF-16 文字列の抽出 (strings) と抽出した16進文字列の自動デコード
- YARA によるスキャンと YARA ルールにマッチした領域の色付け
- CyberChef、IDA、VSCode 等の他のツールでデータを開く
FileInsight-plugins は私がプライベートで開発しているツールであり、私がこれまでに所属した組織で職務上開発したものではありません。
Practical Malware Analysis: Ch 4 A Crash Course in x86 Disassembly
This document provides an overview of six levels of abstraction in computing from hardware to interpreted languages. It then focuses on machine code and disassembly, explaining that disassembly converts binary malware into human-readable assembly language. Basic x86 architecture concepts are introduced, including CPU components, memory layout, instructions, registers, and basic operations like arithmetic, branching, and function calls.
Linux Kernel Exploitation
This document summarizes a presentation on Linux kernel exploitation given by Jon Oberheide. The presentation covered why the Linux kernel is an attractive target, a history of vulnerabilities in the kernel, classes of vulnerabilities, and ways to improve kernel security. Specific vulnerability examples discussed included privilege escalation using ReiserFS extended attributes and a NULL pointer dereference in OpenBSD that was leveraged for a multi-stage kernel exploit. The presentation encouraged both researchers to investigate kernel vulnerabilities and administrators to deploy additional hardening techniques.
GraalVMで使われている、他言語をJVM上に実装する仕組みを学ぼう
2019-02-27（水）【東京】 JJUGナイトセミナー「JVM言語を作ろう！ GraalVMで遊ぼう！」のセッション資料です。
阪田 浩一 (@jyukutyo): ポノス株式会社 / 関西Javaエンジニアの会 / Javaチャンピオン
オラクル社からGraalVMというものが発表され、話題を呼んでいます。GraalVMは、HotSpot VM上に新しいJITコンパイラGraalと、言語実装用フレームワーク/ASTインタプリタであるTruffle、ネイティブイメージ作成機能とその実行に使われるSubstrateVMを併せ持ったものです。すでに、Truffleを使用したJavaScriptやRuby、R、Pythonの実装がGraalVMにあり、これらの言語とJavaは、コードから"相互に"呼び出しができます。独自の言語も、ASTにさえできれば、Truffleを使い、JVM上で実行できるよう実装できます。私も、簡単な四則演算の言語を、Truffleを使って実装したことがあります。Truffleは、Graal上で動作するものです。Graalには、こうして複数の言語を相互運用する際に、高いパフォーマンスを出せるよう、機能が実装されています。
このセッションでは、TruffleとGraalの概要と、言語を実行する際に、この2つがどのような働きをするか、を主に解説します。私もTruffleを使って、言語を実装してみようかな、と思っていただくことがゴールのセッションです。
The TCP/IP Stack in the Linux Kernel
The document discusses various data structures and functions related to network packet processing in the Linux kernel socket layer. It describes the sk_buff structure that is used to pass packets between layers. It also explains the net_device structure that represents a network interface in the kernel. When a packet is received, the interrupt handler will raise a soft IRQ for processing. The packet will then traverse various protocol layers like IP and TCP to be eventually delivered to a socket and read by a userspace application.
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A virtual machine (VM) is a software program or operating system that not only exhibits the behavior of a separate computer but is also capable of performing tasks such as running applications and programs like a separate computer.
デモで楽しむ Visual Studio 2022 & .NET 6 最新アップデート
BuriKaigi 2022 セッション資料です。
https://toyama-eng.connpass.com/event/233459/
※デモ中心のセッションでしたので、こちらのスライドは参考情報となります。
技術紹介: S2E: Selective Symbolic Execution Engine
S2E: A Platform for In Vivo Multi-Path Analysis of Software Systems. Vitaly Chipounov, Volodymyr Kuznetsov, George Candea. 16th Intl. Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), Newport Beach, CA, March 2011.
Virtual Machine Concept
A virtual machine is a software program that behaves like a separate computer and can run applications and programs. It is created within a host computing environment and is known as a guest. There are two types of virtual machines: system virtual machines, also called hardware virtual machines, which allow the sharing of physical machine resources between multiple virtual machines each running its own OS; and process virtual machines, also called application virtual machines, which run as a normal application and support a single process. Virtual machines provide advantages like familiar interfaces, isolation, high availability, and cost reduction, but have disadvantages like indirect hardware access and requiring more RAM and disk capacity. Common examples of virtual machines include XEN, VirtualBox, VMware Workstation, and Citrix
The Linux Kernel Implementation of Pipes and FIFOs
A walkthrough of the code structure used in the linux kernel to implement pipes and FIFOs.
This was presented to a Senior level class at the Indian Institute of Technology, Roorkee.
FISL XIV - The ELF File Format and the Linux Loader
These are the slides used in a lecture I gave in the XIV International Board on Free Software. In this lecture I gave a brief overview of the ELF specification (the ELF specification is a document describing the format of executable, shared libraries and relocatable objects files used in Linux and many others operating systems) and the Linux dynamic loader (which is a program that acts together with the OS to create and initialize a program address space among others tasks).
Linux basics
The document discusses the history and advantages of Linux compared to other operating systems like Windows, DOS and UNIX. It explains how the GNU project was started to develop a free and open source UNIX-like operating system. It then describes how Linus Torvalds developed the initial Linux kernel in 1991 building on the work of the GNU project. It highlights some key advantages of Linux like high security, many available tools and the flexibility of the environment. It also provides a brief overview of some common Linux components like the kernel, shells, KDE/GNOME desktop environments and the directory structure.
2018 Genivi Xen Overview Nov Update
This document provides an overview of the Xen Project's capabilities and challenges for automotive and embedded applications. It discusses the Xen Project ecosystem, key capabilities like virtualization performance, security features, and support for real-time and safety requirements. It also notes challenges like achieving full safety certification. Recent progress is highlighted, such as reducing the code size of a minimal Xen configuration, making Xen dom0-less, and starting work on MISRA compliance with a partner.
Arch linux
Arch Linux is defined by simplicity, modernity, pragmatism, and user centrality. It provides only a command line interface upon installation, allowing users to build a custom system by choosing from over 58,000 packages. As a rolling release distribution, it maintains the latest stable versions of software. Arch Linux requires proficient users who are willing to read documentation and solve their own problems. It is inspired by the CRUX distribution and focuses on simplicity rather than ideology or popularity.
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[cb22] Mal-gopherとは？Go系マルウェアの分類のためのgimpfuzzy実装と評価 by 澤部 祐太, 甘粕 伸幸, 野村 和也
[cb22] Mal-gopherとは？Go系マルウェアの分類のためのgimpfuzzy実装と評価 by 澤部 祐太, 甘粕 伸幸, 野村 和也
NextGen Server/Client Architecture - gRPC + Unity + C#
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[CB19] FileInsight-plugins: Decoding toolbox for malware analysis by 萬谷 暢崇
[CB19] FileInsight-plugins: Decoding toolbox for malware analysis by 萬谷 暢崇
Practical Malware Analysis: Ch 4 A Crash Course in x86 Disassembly
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The Linux Kernel Implementation of Pipes and FIFOs
The Linux Kernel Implementation of Pipes and FIFOs
FISL XIV - The ELF File Format and the Linux Loader
FISL XIV - The ELF File Format and the Linux Loader
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Today’s CIO faces more and more alternatives to solving particular IT problems. One of these alternatives is to choose between readily available package software or to go for custom software to fullfill a set of business needs. There are fundemental differences and a trade off between custom and packaged software but alternatives that could be referred to as the grey area between the two are also available. The final choice depends on the context of the business need and the resources available.
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This document provides a market analysis for a proposed Skirt Weight product. It includes a SWOT analysis identifying external factors like culture, demographics, technology and the economy. It segments the target market of women into high school/college girls and working women. The marketing mix is proposed, including sterling silver and gemstone materials, a $60 price point, promotions on HGTV and Food Network, and mall store placement. Projected first year sales of 500,000 units are estimated to generate $13.9 million in revenue and $13.2 million in profit.
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The document discusses Swarovski's Skirt Weight product. The Skirt Weight is a thin pin attachment that slips through fabric to hold down skirts without leaving holes. It is made of sterling silver with Swarovski crystal creations. The target markets are working women and college/high school girls. Pricing is aimed to match expectations for the luxury product. Promotion will include celebrity endorsements, in-store advertising, and personal selling to showcase the product's value and fashion benefits. Projected first year sales with a $60 price point are estimated at $147 million in revenue and $67.1 million in profits.
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Custom Software Vs. Packaged Software
- 6. Wikipedia Says A Software that is developed either for a specific organization or function that differs from or is opposite of other already available software.
- 7. 1. 2. 3. 4. Initial Meeting Detailed Proposal Detailed Design Agree Contract 5. Development 6. Delivery 7. System Completed
- 9. 1. 2. 3. 4. 5. 6. Maps to business processes Takes existing processes into account Only necessary features Increasingly feasible Oversee development Own the software
- 10. 1. 2. 3. 4. 5. More expensive First to try risk Increased development time Increased coordination Involves iterations
- 12. Wikipedia Says A software that is ready-made and available for sale, lease, or license to the general public .
- 13. 1. Problem identification 2. Vendor search 3. Value assessment 4. Vendor Comparison 5. Acquisition of service 6. Implementation
- 14. 1. 2. 3. 4. 5. Less expensive No development time Economies of scale Proven technology / application Community support (many existing users)
- 15. 1. 2. 3. 4. Not unique to business processes Vendor lock in Unexpected future updates Licensing problems
- 18. • Choose packaged software for 1. 2. 3. 4. 5. Commodity Trivial operation Integration Non-strategic Time and resource critical
- 19. Custom Software
- 20. • Choose custom software if: – Niche – Operationally critical – Secluded – Strategic – Time and resource available
- 21. If you are looking for a bespoke software development company which can understand your business, develop innovative software and offer exceptional value for your money, then look no further as this is what we do.
- 22. Schnell Solutions Limited 3 Earnshaw Hitchin SG5 4EZ United Kingdom Telephone:+44 (0)1462 835 787 E-mail: contact@schnellsolutions.com Visit www.schnellsolutions.com